Our goal is to give you the most up-to-date, accurate information about your state DMV's processes. The date you see here reflects the most recent time we've verified this information with your state DMV. When they change something, we do, too!

The Idaho Division of Motor Vehicles (DMV) works with the state's Department of Environmental Equality to regulate emissions control in Idaho. Read on for information about
required emissions testing, when and how to have your vehicle tested, and more.

New Idaho Residents

After becoming an Idaho resident, you have 90 days to
register your vehicle; after vehicle registration (and if your vehicle qualifies), you'll receive notice that your vehicle must undergo an emissions inspection.

Once it's time for an emissions test, bring your vehicle to an
official Idaho testing station with the $11 fee and any applicable paperwork and identification (call ahead, as this may vary by station).

When your vehicle passes, you'll receive a Vehicle Inspection Report; your technician will advise you on how to proceed from there.

*
NOTE: The 1st notice details where and by what date you should have your vehicle tested. The 2nd notice arrives only if you fail to have your vehicle tested within that time. After you receive the 2nd notice, and final notice, you have 35 days to have your vehicle tested; after that, your registration will be revoked.

Out-of-State Extensions

You might
apply for an emissions test extension if your vehicle is located outside of the Idaho emissions testing area at the time a test is required*. Such circumstances include, but aren't limited to:

Active-duty military personnel.

Out-of-state students.

Business purposes.

To apply for an extension, complete the
Extension Application and mail or e-mail it, along with any supporting documentation, to the addresses listed on the form.

*
NOTE: You won't be eligible if your vehicle is located in a state and/or county that has emissions testing reciprocity with Idaho. See “Out-of-State Reciprocity" below.

Out-of-State Reciprocity

Idaho has
emissions testing reciprocity with various states and counties across the country.

If your vehicle is out of state at the time of testing but located in one of the eligible states and/or counties,
you must apply for reciprocity and have your vehicle tested in that area.

Check the
Application for Reciprocity for the state and county in which your vehicle is located; then, if applicable, complete the form and mail it along with all required documentation to the mailing or email address listed on the form.

Failed Vehicle Inspections

If your vehicle fails its Idaho emissions test,
you must have it repaired and retested.* Your emissions testing technician will provide information about why your vehicle failed and the necessary repairs.

You're allowed
1 retest for free if you bring the vehicle to the same station within 30 days of the original emissions test.

*
NOTE: You may be eligible for a repair waiver or a hardship waiver, depending on your circumstances. Please see “Applying for a Waiver" below for details.